Comfortable layering for everyday living in any season, this UPF 50 shirt jacket keeps you warm and protected from the sun with impeccable outdoor-inspired style. You can be warm in this durable shirt/jacket crafted from a soft cotton blend. It's the perfect layering piece to combat a range of cold weather. Includes two chest pockets and two hand pockets. Columbia offers this men's shirt in multiple colors and sizes. Regular Fit. To ensure the size you choose is right, utilize our sizing chart and the following measurement instructions: For the sleeves, start at the center back of your neck and measure across the shoulder and down to the sleeve. If you come up with a partial number, round up to the next even number. For the chest, measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.